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DLPLCR6500EVM: Controller/DMD Incompatible error

Lukas Adam
Prodigy 45 points

Part Number: DLPLCR6500EVM

Hello,

I have been using the pattern-on-the-fly mode of my DLP LCR 6500 evaluation board and it suddenly switched to standby mode and displayed the error "Unable to switch from Memory Mode. Error: Controller/DMD Incompatible" and the Controller/DMD incompatible status box was ticked. It was then stuck in standby mode and could no longer be controlled by the software.

I have tried resetting it and it sometimes displays the error "Unable to reset. Error: i" although even when it didn't display this resetting did not do anything. Unplugging and plugging back in also did not help. I then looked though these forums and my error seems to be similar to Parastoo Khosh's: My LEDs are also all as they should be. I have uploaded v4.1 of the firmware using v3.0 of the GUI but this did not help either. The flex cable only has a single 90 degree bend with a radius much larger than the recommended minimum 25.4 mm. I also unscrewed the cable and cleaned the contacts on the cable ends and circuit boards, although they weren't visible dirty. The cable didn't have any breaks or sharp kinks so I reseated it. I had only been using the DMD for a few hours up to the point that it stopped functioning and haven't modified the hardware or software. The software still recognises the firmware as v4.1 when it is connected to the board.

Do you have any idea what might be causing this error?

Thanks in advance,

Lukas

  • 0
    TI__Mastermind 48490 points

    Hello Lukas,

    First welcome to the DLP section of the TI-E2E community.

    It looks like you have gone through the steps in the other thread.  Also try turning the cam screw on the DMD socket to release (but do not remove) the DMD (I think it is 1/4 turn counterclockwise) and then lift it about 1 mm and then let it go back in.  Then turn the cam screw back 1/4 turn to secure it again.

    If that does not help, please contact us back on this thread.

    Also, how long ago did you purchase the kit?

    Fizix

  • 0 in reply to Fizix
    Prodigy 45 points
    Hello Fizix,

    That didn't help either, I'm afraid.
    I have also noticed that the DMD displays a static pattern with a stripe across the array and other pixels seemingly at random, whether the EVM is powered or not.

    We purchased the kit on 30 March 2017.

    Lukas
  • 0 in reply to Lukas Adam
    Prodigy 45 points
    The pattern on the DMD looks similar to Jiawen's:
    e2e.ti.com/.../2162856
    including position of the stripe, except without the arrow. I was displaying a speckle pattern so it could well still be displaying that at the same time.

    Lukas
  • 0 in reply to Lukas Adam
    TI__Mastermind 48490 points

    This appears to be a DMD error.

    What version of the firmware & GUI was running when the kit stopped working? Also there is a part number on the DMD.  Does it end in B?

    Fizix

  • 0 in reply to Fizix
    Prodigy 45 points

    I'm not sure what version the firmware or GUI were while I was using it, but I used the ones that came with the software on the DLP 6500 EVM page on the TI website in April. I never manually updated the firmware before the DMD broke. When I loaded the new firmware to the EVM after it stopped working the software had to update the GUI, so I suppose that that must have been one version previous at least.

    The part number doesn't end in B.

    Thanks

    Lukas

  • 0 in reply to Lukas Adam
    TI__Mastermind 48490 points

    Lukas,

    Thank you for the information.  We are investing this at our end.  I am going to send you a friend invitation to get some more specific information from you.

    Fizix

  • 0 in reply to Fizix
    TI__Mastermind 48490 points
    Hello Lukas,

    We are waiting for DMD's to test on a couple of boards to verify that the cause of the issue. We believe at this time that touching certain component(s) on the board while running can precipitate this issue. In most cases replacing the DMD (which can be purchased from ti.com or one of our distributors) will usually solve the issue.